[1] Benzothienopyrimidines. II. Study of the electrophilic substitutions of [1] benzothieno [3, 2??d] pyrimidine and [1] benzothieno [3, 2??d] pyrimidin??4??(3H) one

…, P Touzot, M Robba, H El??Kashef

文献索引：El-Kashef; Rault; Cugnon De Sevricourt; et al. Journal of Heterocyclic Chemistry, 1980 , vol. 17, # 7 p. 1399 - 1404

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被引用次数: 9

摘要

Abstract The nitration and bromination of both [1] benzothieno [3, 2-d] pyrimidin-4 (3H) one (1) and [1] benzothieno-[3, 2-d] pyrimidine (2) has been studied. Nitration of 1 at− 30 afforded a mixture of 8-nitro [1] benzothieno-[3, 2-d] pyrimidin-4 (3H) one (7b)(70%) and 6- nitro [1] benzothieno [3, 2-d] pyrimidin-4 (3H) one (7a)(30%). However when the nitration was carried out at 60, the 6, 8-dinitro derivative 8 was the result. On the contrary, the ...